Finding the Fourth Proportional to 82,710.26, 123,130.02 and 82,218.18

Step by Step Solution

1. Step 1: Write the proportion equation
   82,710.26 : 123,130.02 = 82,218.18 : x
2. Step 2: Convert to fraction form
   82,710.26/123,130.02 = 82,218.18/x
3. Step 3: Cross multiply
   82,710.26x = 123,130.02 × 82,218.18
4. Step 4: Simplify right side
   82,710.26x = 10,123,526,147.76
5. Step 5: Solve for x
   x = 10,123,526,147.76/82,710.26
6. Step 6: Final answer
   x = 122,397.46